159 entries under rigid topic. ×
| cemented(adjective, set, strong, hard, secure) | |
| compacted(adjective, set, strong, hard, solid) | |
| congealed(adjective, set, hard, solid, heavy) | |
| jelled(adjective, set, hard, solid, heavy) | |
| nonporous(adjective, hard, solid, inflexible) | |
| packed(adjective, close, set, strong, hard) | |
| rocklike(adjective, strong, hard, substantial, stiff) | |
| authoritarian(adjective, strong, hard, tough, severe) | |
| dead set(expression, adjective, tough, severe, harsh) | |
| dogmatic(adjective, determined, fixed, oppressive) | |
| exacting(adjective, hard, tough, severe, rough) | |
| hard-line(adjective, strong, hard, tough, severe) | |
| starched(adjective, set, hard, solid) | |
| starchy(adjective, hard, solid, stiff) | |
| stark(adjective, strong, hard, sound, tough) | |
| brittle(adjective, hard, solid, stiff) | |
| contracted(adjective, hard, solid, certain, restrained) | |
| dour(adjective, tough, severe, harsh, cruel) | |
| fine-grained(adjective, hard, solid, inflexible) | |
| frozen(adjective, calm, quiet, hard, solid) |
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| APA | Smart Define. (2016). firm thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/firm/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, firm thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>. |
| MLA | Smart Define. "firm thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms> |